UCC2813DTR-3

Product Overview

Category

UCC2813DTR-3 belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used in power management applications.

Characteristics

• UCC2813DTR-3 is a high-performance current-mode PWM controller.
• It operates at a fixed frequency and provides precise control over the output voltage.
• The device incorporates various protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
• It is designed to operate with both low-power and high-power systems efficiently.

Package

UCC2813DTR-3 is available in a small outline package (SOT-23-6) which allows for easy integration into compact designs.

Essence

The essence of UCC2813DTR-3 lies in its ability to regulate and control power delivery in various electronic systems.

Packaging/Quantity

UCC2813DTR-3 is typically packaged in reels containing 3000 units per reel.

Specifications

• Input Voltage Range: 4.5V to 30V
• Output Voltage Range: 2.5V to 30V
• Operating Temperature Range: -40°C to 85°C
• Switching Frequency: 100kHz to 1MHz
• Maximum Duty Cycle: 90%
• Quiescent Current: 2mA

Pin Configuration

UCC2813DTR-3 features a 6-pin SOT-23 package with the following pin configuration:

_______ VFB| |GND VIN| |COMP CS | |RT/CT VCC| |OUT |_______|

Functional Features

1. Current-Mode Control: UCC2813DTR-3 utilizes current-mode control to regulate the output voltage accurately.
2. Fixed Frequency Operation: The IC operates at a fixed frequency, ensuring consistent performance.
3. Protection Mechanisms: It incorporates various protection features like overvoltage protection, undervoltage lockout, and thermal shutdown to safeguard the system.
4. Wide Input Voltage Range: UCC2813DTR-3 can handle input voltages ranging from 4.5V to 30V, making it suitable for a wide range of applications.
5. Efficient Power Management: The device efficiently manages power delivery in both low-power and high-power systems.

Advantages and Disadvantages

Advantages

• Precise voltage regulation
• Compact package size
• Wide input voltage range
• Integrated protection features
• Efficient power management

Disadvantages

• Limited maximum duty cycle (90%)
• Requires external components for operation

Working Principles

UCC2813DTR-3 operates based on the current-mode control technique. It compares the feedback voltage (VFB) with a reference voltage to generate an error signal. This error signal is then used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load. By continuously monitoring and adjusting the duty cycle, the IC ensures accurate voltage regulation.

Detailed Application Field Plans

UCC2813DTR-3 finds applications in various fields, including:

1. Power Supplies: It is commonly used in switch-mode power supplies (SMPS) to regulate the output voltage efficiently.
2. Battery Chargers: The IC can be employed in battery charging circuits to maintain precise control over the charging process.
3. LED Lighting: UCC2813DTR-3 is suitable for LED driver circuits, enabling efficient power management in lighting applications.
4. Industrial Automation: It can be utilized in industrial automation systems to control power delivery to various components.

Detailed and Complete Alternative Models

1. UCC2813-3: Similar to UCC2813DTR-3, this model offers the same functionality but comes in a different package (8-pin SOIC).
2. UCC3813DTR-3: This IC provides similar features as UCC2813DTR-3 but operates at a higher switching frequency.
3. UC3843: A popular alternative, UC3843 is a current-mode PWM controller with extended temperature range and higher output current capability.

In conclusion, UCC2813DTR-3 is a high-performance current-mode PWM controller used in power management applications. It offers precise voltage regulation, integrated protection features, and efficient power management. With its compact package size and wide input voltage range, it finds applications in power supplies, battery chargers, LED lighting, and industrial automation systems. Alternative models such as UCC2813-3, UCC3813DTR-3, and UC3843 provide similar functionality for different requirements.